• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.34 no.5
• /
• pp.1553-1558
• /
• 2014

The travel demand, peak hour ratio and forms of platform of urban railway stations are very different each other, also the users' behavior is. So the types of urban railway stations have to be classified according to these characteristics. However, the current methods of classification are arbitrary on the purpose of each studies and the legal standards are very simple; categorized by normal station vs. whistle station, types of trains, forms of platforms and shapes of architecture. This study clarifies the standards for classifying the types of urban railway stations, results the complete enumeration survey on all the urban railway stations in Seoul Metropolitan Area and makes the database based on the surveyed data, purposing on helping for making strategies and researching. On this study, utilizing the database which is established for this study, the correlation between the physical and geographical characteristics and users' travel patterns of urban railway stations is clarified by the statistical analysis. In the future, the statistical results will be helpful for making strategies and researching.

• Fire Science and Engineering
• /
• v.29 no.5
• /
• pp.79-87
• /
• 2015

The placement of Korean fire-fighting administrative power in urban areas shows regional unbalance. In an ideal system, all citizens would be provided with equal fire protection and rescue services, but this is usually difficult to realize due to regional conditions or budget problems. In the case of Busan Metropolitan City, we deduced that it is impossible for half of the buildings to receive rescue services within 5 min, and the conditions are much worse for areas with long or wide fire-fighting service regions. The approach vulnerability for the existing emergency rescue squad locations was assessed. The results revealed that if a rescue team's location is shifted, the improvement effect will be virtually insignificant because of their geographical position. Therefore, this study suggests the establishment of additional rescue squads. It is proven that adding 5 rescue centers in the following locations could solve the problem of approach vulnerability: Bukbu, Gangseo, Geumjeong, Gijang, and Haeundae, in order of effectiveness. The number of buildings in the areas is 53,546.

• Journal of Gifted/Talented Education
• /
• v.13 no.1
• /
• pp.81-95
• /
• 2003

There have been tremendous needs and requirements of special education for the gifted to the level of country development and for developing their talents. Even though a lot of research has been done on special education for the gifted supported by the government, lack of educational materials and material development has been a main concern. Some trails using the web with the help of information technology have been made on distance education and resulted good effect on education. No application using a web-based educational method has been made on special education for the gifted so far. This paper describes about the web-based special education for the gifted on mathematics. The discussed topics are development of educational materials, compliments of the current educational materials in mathematics being used at the KIGES(Kyungnam Institute of the Gifted Education in Science), and the continuation of special education for the gifted. Furthermore, a better and more efficient way is suggested for special education for the gifted that has been limited by geographic and locational restrictions.

• Journal of the Korean association of regional geographers
• /
• v.19 no.2
• /
• pp.340-351
• /
• 2013

International society has been making a lively discussion about natural disaster by climate change to mitigate natural hazard centering around intra-government association. This study dealt with a strategic mitigation and technical adaptation to support a habitual natural disaster region such as Bangladesh in terms of international cooperation for assistance to protect against the natural hazard. The land-cover on scale of one third of Bangladesh is situated lower than sea level that causes habitual flooding accident which gets increasing in the strengthen every single year. Most of people lives around exterior sea coast being faced with disaster of abnormal storm forming every three year cycle. Especially, the socio-economic status of the people in the coast is usually very low, and it need to get help from international cooperation aid. Therefor, the case study for the vulnerability of natural disaster in Bangladesh on geographical analysis is meaningful to join the international cooperation taking a part of role on technical support and education for adaptation of the natural disaster.

• Journal of the Korean Geographical Society
• /
• v.48 no.1
• /
• pp.72-86
• /
• 2013

Industrial agglomeration is an old theme in economic geography and many studies have been devoted to this topic. But only few have empirically looked at the time trend of industrial agglomeration. This study measured agglomeration of U.S. industries over last 29 years and measurement results indicated that industrial clustering has occurred during the study period in all study industries without a common time trend shared amongst the study industries. The agglomeration levels then were plugged in to investigate causalities, i.e. causal relations, around industrial agglomeration. Three variables were selected to see causal relations with agglomeration levels based on literatures, and our focus was given to the causality between transport network and agglomeration. Causal relation from transport to agglomeration was found in various industries and this supports the argument that the development of transportation influences industrial agglomeration. At the same time inverse and bi-directional causalities were also revealed implying more complex relationship between these two.

• Journal of the Economic Geographical Society of Korea
• /
• v.3 no.1
• /
• pp.5-20
• /
• 2000

Recently as globalization of financial capital is progressed, possibility of crisis and unreliability of world economy is more growing. Korean economy required radical restructuring because of the financial crisis and the economic changes occurred in that process. This study is to explain the economic changes of Gwanagju city is produced by the financial crisis of Korean economy The most important industries are service and transportation equipment in Gwangju city. These industries began to decrease after financial crisis but machinery equipment, electrical machinery & electronics and rubber goods & plastic industry is growing relatively. Because of the decrease of service, the economy of inner city which service industry relatively agglomerated in is reducing. And agglomeration space for the optical photonics industry was built up by the upbringing policy of government on high-technology industry to overcome the economic crisis and micro industrial space such as venture building and establishment nursery center was built up. But high-technology industries have many geographical limits to embed in Gwanagju city, so there needs to construct regional innovation system for knowledge based economies

• Journal of the Economic Geographical Society of Korea
• /
• v.18 no.1
• /
• pp.1-16
• /
• 2015

It is widely believed that increasing socio-economic polarization inspired by globalization and economic restructuring worsens residential segregation by class in Korean cities. However, the existing literature falls short in showing the recent changes of the residential segregation, particularly after the 1997 financial crisis, with reliable and systematic segregation measures. Noting that there are the two major dimension in residential segregation - evenness-concentration and exposure-clustering - this study introduced not only global measure (dissimilarity index and isolation/interaction index) but also local measures (location quotient and Local Moran's I) for each dimension. These measures are applied to the case study of Seoul in the 2000s. The class is defined by education attainment and the data is obtain through the MicroData System Service System(MDSS). The result shows that the residential segregation by education attainment persists through 2000s and even get worse in some dimension. More significantly, it turns out that high-class and low-class residence are nearly mirror-images of each other, indicating high segregation.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2011.05a
• /
• pp.34-34
• /
• 2011

최근 우리나라에서는 기상이변과 기후변화에 의한 국지성 집중호우의 발생으로 인해 인명 및 재산 피해가 증가하는 추세이다. 따라서 이러한 기상현상을 좀 더 정확하게 예측하고 이를 대응하고자 악기상 모형의 개발과 구축 및 활용에 대한 연구들이 활발하게 진행 중에 있다. GCM이 제공하고 있는 많은 유용한 정보에도 불구하고 대부분의 모델이 시 공간 분해능과 물리 과정의 한계점으로 인해 지역적인 기후 특성이나 변화를 예측하기에는 많은 문제점들이 나타나고 있다. GCM의 한계점을 극복하기 위한 방법으로 세밀한 규모의 기후 정보를 얻기 위해 복잡한 지형과 해안선, 호수, 식생, 지표특성과 같은 아격자 규모의 강제 효과를 반영할 수 있는 고해상도 지역 기후 모델(Regional Climate Model, RCM)의 필요성이 제기되었다. 본 연구에서는 전지구 20km 격자자료를 입력장으로 하여 8km 격자로 한반도를 포함하는 도메인에 대해 비정역학 완전 압축성 중규모 모델인 WRF를 이용하여 상세예측자료를 생산하고자 하였다. 강수 예측의 경우 돌발적으로 발생하는 경우가 많아, 이를 예측하기 위해서는 상세한 강수량 정보를 빠른 시간 내에 정확히 제공할 수 있는 모델을 사용하여야 한다. 강수의 경우 온도와는 달리 공간적 편차가 매우 커 지역적으로 정확한 강수량을 예측 하는데 어려움이 있다. 상세강수 예측을 위해 미세 격자 규모의 비 정역학 모형을 사용할 경우 계산양이 매우 늘어나기 때문에 장시간의 모형 적분 시간뿐 아니라, 상당한 컴퓨터 자원을 필요로 하므로 이에 대한 대안으로 지형효과를 포함한 강수량 진단 모형인 QPM(Quantitative Precipitation Model)을 사용하였다. 최종적으로 한반도의 복잡한 지형적 영향을 반영하기 위해 1 km의 수평해상도를 가지는 고해상도 강수량 진단 모형(QPM)과 상세한 지리적, 공간적 분석을 할 수 있는 ARCGIS를 이용하여 한반도 도별 상세 강수자료를 생산하고자 한다.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.35 no.12A
• /
• pp.1171-1180
• /
• 2010

In wireless sensor networks, reliable event detection is one of the most important research issues. For the reliable event detection, previous works usually assume the events are only individual objects such as tanks and soldiers. Recently, many researches focus on detection of continuous objects such as wild fire and bio-chemical material, but they merely aim at methods to reduce communication costs. Hence, we propose a reliable continuous object detection scheme. However, it might not be trivial. Unlike individual objects that could be referred as a point, a continuous object is shown in a dynamic two-dimensional diagram since it may cover a wide area and it could dynamically alter its own shape according to physical environments, e.g. geographical conditions, wind, and so on. Hence, the continuous object detection reliability can not be estimated by the indicator for individual objects. This paper newly defines the reliability indicator for continuous object detection and proposes an error recovery mechanism relying on the estimation result from the new indicator.

• 한국해양학회지
• /
• v.28 no.2
• /
• pp.114-120
• /
• 1993

Numerical method of nonlinear regression was introduced to characterize grain-size distribution more effectively than using the traditional textural parameters. This technique proved critical particularly to multimodal size distributions, as exemplified by samples from Cheju strait continental shelf. Grain-size analysis of samples collected from the Cheju Strait continental shelf reveals that 86% of the grain-size distributions are multimodal. As multimodal grain-size distribution deviates from the statistical (log) normal distribution, the grain-size parameters traditionally used in sediment studies do not describe the distribution efficiently. Therefore, the use of grain-size curves into elementary normal component curves was used. Means and standard deviations of 387 decomposed normal components were decided by a decomposition method (nonlinear least square regression) from 167 size curves of the Cheju Strait sediments. The mean values of decomposed normal components show peaks at 1-3 phi and 8-9 phi size classes. The plot of mean values of the coarse fraction normal components on the map shows a characteristic and complex areal distribution. On the basis of the areal distribution of the mean values of the components and that of isopach of total Plenipotence sediment, the areal distribution of layers composing a transgressive sand of Late Plenipotence age were revealed.